I'm in the process of installing a triangulated 4 link on my 48 Chevy. For the upper rear shock mount bar I was hoping to repurpose either a solid steel bar that came off my truck (pic attached), or an old barbell I had in my basement.

I'm not really sure what it's old purpose was as it was not connected to anything on the frame.

Does anyone with more experience see any issues with using either of these items?